Compensating gearing



D. D ORMSBYr I COMPENSATING BEARING. APPLICATION FILED MAY 18. 1914.

1,352,910, PatentedSept. 14,1920.

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f I 7 $3M, 6121011421 4 n.- n. ORMSBY. COMPENSATING humus. APPLICATIONFILED MAY 18. 1914 1,352,910, PatentedSept. 14, 1920.

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UNl'lE. STAlTiS rarer DONALD J). oRMsBY, 0F SYRACUSE, NEVI YORK,Assn-mos. TO BRown-tIPE-cHArIN I (30., SYRACUSE, NEW YORK, A CORPORATIONOF NEW vYORK.

COMPENSATING GEARING.

To all whom it may concern: p

Be it known that I, DONALD D. ORMsBY, a citizen of the United States,and a resident of Syracuse, in the county of Onondaga and State of NewYork, have invented a certain new and usefulfCompensati-ng Gearing, ofwhich the following is a specification.

This invention relates to compensating gearing and has for its object agearing in;

In describing this invention, reference is had to the accompanyingdrawings, in which like 7 characters designate parts in all the views.

Figure '1 is a horizontal sectional'view through my compensatinggearing, the con- 7 tiguous part of the driving shaft and pin ionthereon being also shown.

Fig. 2 is a sectional view ht angle to Fig. 1.

Figs. 3 and 4 are,.respectively, face views of the opposing gears 'ofthe gearing.

Fig. 5.is a developed view of the periph cry of one ofthe compensatingpinions.

Figs, 6 and 7 are detail views of modified form of my invention, Fig. 6being a section-through the opposing gea'rsandthe "compensating pinions,and Fig. 7 a View of the periphery of the opposing gears.

This gearing comprises, generally, a drlving element or'casing, opposinggears, one

having teeth inclining to the right and the; other having teethinclining to the left, and

compensating pinions each having right and left helical teeth meshingwith the teeth of said gears. I

The gears here shown are whatfor convenience I have called aright crownspiral gear and a left crown spiral gear, ,and the teeth of eachcompensating pinion are formed by cutting right and left helices whichintersect, so that each tooth is provided with right and left handfaces, that is, faces arranged in helices 'cut in opposite directions,said faces coacting with the teeth of the spiral crown gearsrespectively. This corresponding taken at a.

Specification of Letters Patent. Patented S t. 14 1920 Application'filedmay 18, 191a. Serial Nb. 839,359. I

cesses 7, formed in opposing faces ofthe.

margins of the sections 1, 2 and the sections 1, 2 and 3 are j heldtogether by suitable means, as screws 8, extending through the marginsof the sections 1, 2 and through the arms 5. The section 1 has securedthereto a suitable gear ring 9 which meshes with the driving pinion 10.

. 1 1 anol 12 are the crown spiral gears which are in the form of diskshaving teeth on their opposing sides arranged in plane spirals, theteeth having faces 11 and 12?,

the teeth of the gear 11 being right hand or progressing or inclining ina clockwise 'di rection, and those of the gear 12 being left hand orprogressing in an anti-clockwise direction. teeth of the compensatingpinions when the vehicle is traveling forwardly and turning to the left,but when the vehicle is backing up and turning to the right so that thecom-- pensating gear is in action, faces 11*, 12 of the teeth coact withthe teeth of the pinions. Each of the gears 11 and 12 is formed with ahub 13 which is journaled in a suitable bearing 14: in the section 1 or2 and which receives the ends of a shaft section 15hr 16. The drivingmembers of the mo-' tor vehicle are mounted on the outer ends of theshaft sections, as will be understood by those skilled in theiart. Theside sections 1, 2 of the casing are also provided with hubs 17 mountedon the shaft sections 1.5, 16,01 on suitable bearings.

18 are what for convenience their axes extending crosswise ofthe casingI have called, 7 right-and-left hand helical pinions carried by thecentral section 3 of the casing with- .in the "recesses 6 and beingarranged with The faces. 11 12 coact with the r or of the gears 11 and12," and as here 7 shown, they are mountedupon spindles 19 extendingthrough the recesses 6 and'located' midway between opposing faces of thegears 11, 12 and parallel to said faces and in circular series aroundthe axis of the dif-' ferential gear, that is, the aXis of the shaftsThe faces of the teeth of each gear 18 are out along two spirals orhelices, as seen in the developed view in Fig. 5, which helices progressin opposite directions, thereby forming on the teeth, right and lefthand faces 20, 21, the faces 20 coacting with the faces 11 of the teethof the gear 11 and the faces 21 coacting with the faces 12 of the teethof the gear 12. Each tooth of the helical pinions is also formed withrear faces 20, 21 which, during rearward rotation of the gears 11 12 andwhen the compensating gearlng is in action, coact with the faces 11 12of the gears.

Although the pinions are shown as mounted upon spindles 19, they may bemounted or supported in any other suitable manner. Usually, for thepurpose of facilitating the holding of the spindles in position, thespindles are paired and the contiguous 01 meeting ends of each pair ofspindles are lapped and secured together in any suitable manner, asshown at 22.

The inclinations of the teeth of the crown and spiral gears and thehelical pinions, are such that the pinions do not lock but compensatingaction'of the pinions takes place practically only when the Vehicle isturning a curve and does not take place at all times when the groundwheelshaveunequal trac-v tion, as is the case in-ordinary compensatinggears. Instead of crown spirals, other gears having teeth inclining inopposite directions maybe employed, as shown in Figs. 6 and 7,

in which worm gears 23, 24 areshown, the teeth of which are inclined inopposite directions, and with which mesh'teeth of a helical pinion 25having right and left teeth.

This gearing is particularly advantageous in that it consists of a fewnumber of parts, and that owing to the arrangement of the teeth'of thecrown gear and helical pinions,

compensating action takes place, that is, the pinions transmit drivingmotion to the outside wheel of a vehicle, and owing to the fact 7 that aright-and-left hand helical gear is used to mesh with the crown spiralgears, it is unnecessary to reverse the movement .of the inter osedpinions. What i claim is p 7 1. A compensating gearing comprising acasing including opposing side sections have V the peripheral flanges ofthe side sections,

ing opposing'peripheral flanges, an intermedlate section having atransverse recess therethrough and flanges extending between and meansextending through the flanges of the side sections to clamp the sametogether onto the intermediate section, opposing gears located in theside sections, and a compensating pinion supported in the recess inseries and in pairs, the spindles of each pair 7 being arranged end toend, and having their meetingends secured together, substantially as andfor the purpose set forth. r A compensating gearing comprising a casingincluding opposing side sections and an intermediate section between theside sections including a hub and outwardly eXtending arms formed withrecesses, opposing gearsmounted in the side sections, compen 'satingpinions mounted in the recesses,

spindles upon which the pinions are mounted,-the spindles extendingbetween the gears and arranged in circular series and in pairs, and thespindles of each pair b61112; anranged endtoend and secured together,substantially as and for the purpose specified;

4. A compensating gearing comprising a casing including opposing sidesections and an intermediate section between the side sec tion, theintermediate section being formed with recesses, and fastening meanspassing through the margins of the side sections, and through theintermediate section, crown spiralgears mounted in the opposing side 7sections, and compensating helical PlIllOIIS mounted in .the recessesand having teeth formed with right and left faces for engaging with theteeth of the crown spiral gears.

respectively, substantially as and for the purpose set forth. v t V Intestimony whereof, I, have hereunto signed my name in the presenceof twoattesting witnesses, at Syracuse, in the county of Onondaga, in theState ofNew York, 7

this 25th day of ;April, 1914. V

DONALD D. ORMSBY. Witnesses:

S. H. Coon, W. M. EvANs. I 5;

